New images from ESA's Biomass satellite reveal forests, volcanoes, deserts and glaciers in striking detail, hinting at what's still to come.

Extreme humidity and triple-digit temperatures are affecting around 250 million people across the United States. Here's the ...

At any given time, about two-thirds of Earth's surface is covered by clouds. Overall, they make the planet much cooler than ...

Puffy, wispy, white and gray, we’ve seen them all this spring. Clouds come in a variety of types, and each type comes with ...